Patent SG-11201808998R-A (SG)
Title: Encryption key exchange process using access device
Inventor: DEAN CHRISTOPHER
IPC: H04L29/06
Filed: 2017-07-07
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property :7--- -` , MD 1101111 0 DOI HIM 011101 0 01111110111001111110111011111111111110111111 Organization International Bureau (10) International Publication Number i (43) International Publication Date .../ WO 2018/013431 A3 18 January 2018 (18.01.2018) W I P0 I P C T (51) (21) (22) (25) Filing Language: (26) (30) (71) International Patent Classification: (72) Inventors: DEAN, Christopher; 900 Metro Center, Fos- GOOF 21/62 (2013.01) GOOF 21/31 (2013.01) ter City, California 94404 (US). AABYE, Christian; 900 H04L 9/08 (2006.01) H04L 29/06 (2006.01) Metro Center Boulevard, Foster City, California 94404 H04L 12/58 (2006.01) GOOF 1/16 (2006.01) (US). GOOF 21/60 (2013.01) (74) Agent: JEWIK, Patrick et al.; Kilpatrick Townsend & International Application Number: Stockton LLP, Mailstop: IP Docketing - 22, 1100 Peachtree PCT/US2017/041220 Street, Suite 2800, Atlanta, Georgia 30309 (US). International Filing Date: (81) Designated States (unless otherwise indicated, for every 07 July 2017 (07.07.2017) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, English CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, Publication Language: English DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, Priority Data: HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 62/360,768 11 July 2016 (11.07.2016) US KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, Applicant: VISA INTERNATIONAL SERVICE OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, ASSOCIATION [US/US]; 900 Metro Center Boulevard, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, Foster City, California 94404 (US). TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. = = Title: ENCRYPTION : Encryption communication device including a token and the portable communication device to create access (54) I l portable ---- initiated, GO communication KEY EXCHANGE TRANSACTION S402 INITIATE PROCESS USING ACCESS IT AUTH REQUEST DEVICE AUTH REQUEST TRANSMIT FIG. 4 between a communication is The portable key is thereafter device. use = = = PORTABLE COMM. DEVICE ila ACCESS DEV; CE 42s2 PROCESSING NETWORK ill HOST SYSTEM 411 = = data TRANSM S408 S410 After = REQUEST DATA S404 4 TRANSMIT TOKEN, CRYPTOGRAM, AND LUK STATUS S406 = - = TRANSMIT NEW LUK S418 = 'PANSM I I AU I Fl RESPONSE S4' 1 ) TRANSMIT AUTH RESPONSE S412 4 = DETERMINE NEW LUK AND MODIFY AUTH RESPONSE S414 includes initiating communication key, and an access device. a remote server via the access use key. The second limited transactions. = 4 disclosed. A disclosed method a first limited use encryption a second limited use key from use key with the second limited be used to conduct access then key exchange processes are device receives replaces the first limited such as cryptograms that can M 11 M 7r M (57) 0 1-1 © used r'l O [Continued on next page] WO 2018/013431 A3 MIDEDIMOMOIDEIRDERIO 011111111111 VIII VIII 101111111111101110 II (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) (88) Date of publication of the international search report: 22 February 2018 (22.02.2018)